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Revolutionary Design for Rodent Electrophysiology

Exploded Celeris

Light Guide Electrode

A dual function stimulator-electrode placed directly onto the rodent's eye simultaneously delivers light stimulus and picks up neural electrical activity.

  • stimulator

    Flash Stimulation

    • RGB color with optional UV
    • 3 sizes (mouse, rat, and baby mouse)
    • Luminance range: 5 E-7 to 1,000 cd.s/m2

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  • perg

    Pattern Stimulation

    • Conducts Pattern ERG and VEP
    • Dual eye pattern stimulation
    • mfERG (R&D phase)

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Celeris Accessories

  • isofluorane molecule

    Nose Cone

    Administering gas anesthesia

  • rabbit

    Rabbit Kit

    Table extension and stimulators

espion logo


All systems run on our powerful Espion software. Enjoy limitless customization – or simply utilize our standard test package. Bulk export software package available upon request.

Click here for more on software

eXporter logo


Bulk export software package is available for users looking to export multiple test files and convert them to .TXT files.

Click here for more on exporter software

Other Research Products

E3 Combinations

Combine any Diagnosys flash or pattern stimulator with any electrode to test any animal.

Consult Our Experts


Lab Cradle

ColorDome stimulator using traditional gold electrodes or your custom electrodes, on species from zebrafish to rodents.

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Lab Cradle


  • I have used Diagnosys electrophysiology systems for clinical testing and research for nearly fifteen years. The systems are reliable, easy to use and protocols readily modified to answer research questions. The few times I have had problems with the equipment, Diagnosys has quickly responded and fixed the problem.

    Ron Hansen

  • Diagnosys LLC not only provides high quality testing equipment, but also provides excellent customer support services. All employees are knowledgeable in the field of visual electrophysiology and are able to help with any questions or issues you may have.

    Julie Racine

  • As a clinical neurophysiologist in a busy pediatric clinic, I wholeheartedly believe that the equipment made available to us by Diagnosys LLC allows for the testing necessary to aid in clinical diagnostics and research. I have always felt that this family run company has been by my side each and every step of the way, despite being located in another country.

    Dr. Allison Dorfman

  • Celeris is the Luxury Vehicle of Electrophysiology! I love Celeris for the vision science field because it grants all investigators access to a wide variety of electrophysiological tests without requiring in depth expertise of the theory of electrophysiology. It's wonderfully simple and easy to operate.

    Barbara A. Mysona